Crafted with top-tier engineering panache, these world renowned tuners are a nod to when perfection was the only option. The robust housing? Perfect for the worm, gear, and string post. Boasting a snazzy 14:1 gear ratio. Precision? You bet – these worms and gears are cut sharper than a new box cutter, ensuring there's no mucking about with backlash or slip-ups. Fancy a tinker? The countersunk tension screw lets you dial in your preferred turning tension. And here's the cherry on top – the gearbox is lubricated with a one-of-a-kind blend, promising years of tuning prowess. 3 Treble and 3 Bass with 15.8mm washers, bushings, and wood screws. Product Specs Item Number: 29190 Make: Grover Model: 102NK Rotomatic Machine Heads - Nickel Keystone Buttons Condition: Brand New Finish: Nickel Categories: parts ⇒ tuning-heads Made In: United States MPN: GR102N UPC: 082562072626